Ngimat Co.

Shipley Company LLC

Tzyy-Jiuan Jan Hwang

Andrew Tye Hunt

Girish N Deshpande

Subramaniam Shanmugham

Miodrag Oljaca

Aimee Poda

George G Neuman

Shara S Shoup

Edward J Reardon

Yongdong Jiang

Todd A Polley

Michelle Hendrick

William D Danielson, Jr

Trifon Tomov

Miodrag Oljara

Wayne Neilson

William J Dalzell, Jr

James D Huggins

David E Bane

Nii Sowa Laye

Ian H Campbell

Yibin Xue

Erika Moore

Eric J Yurtkuran

Flame produced vapors for combustion chemical vapor deposition are redirected from the direction of the flame by differential atmospheric pressure, such as positive pressure provided by a blower or negative pressure provided by a vacuum. This allows, for example, lower surface temperatures of substrates being coated with flame-produced vapors and coating of interior surfaces.

Chemical vapor deposition methods for making powders and coatings, and coatings made using these methods

A coherent material is formed on a substrate () by providing a precursor suspension () in which particulates are suspended in a carrier fluid, and directing the precursor suspension () at the substrate () from a first source (). Generally contemporaneously with application of the deposited precursor suspension () to the surface, hot gases, e.g. hot gases produced by a flame (), are directed at the substrate () from a remote second source () to fuse the particulates into the coherent material.

Method of depositing materials

Coatings, particularly thin films, of polymeric material are produced in accordance with the invention by applying a finely divided aerosol of polymer solution to a substrate and substantially simultaneously applying an energy source to the applied solution to apply the solution. In cases where the polymer is cross-linking, the energy source assists in cross-linking of the polymer. The preferred energy source is a flame that may optionally or desirably deposit material along with the polymer spray. One particular aspect of the invention is directed to production of polyimide films. In accordance with another aspect of the invention, the co-deposition process is used to provide thin polysiloxane coatings on glass and other substrates.

Polymer coatings

A continuous feed coater for coating a length of substrate with vaporized or sprayed material, is disclosed. A specific example is a roll-to-roll coater which includes two lower supply rollers for supporting two webs of uncoated material, and two upper take-up rollers for supporting the webs after they are coated. A central web-support forms a plenum that acts as a deposition chimney or chamber by bringing the two webs into close proximity to each other to form two large walls of the plenum. The ends of the webs are sealed using side dams to form the chimney with a rectangular cross section such that the vapor cannot exit from the edges of the material. The vaporized coating constituents to be deposited on the rolled material are directed into the deposition plenum from a coating material supply source located at the bottom of the plenum, and are exhausted through the top of the plenum. By providing a plenum having two large surface area walls formed of the material to be coated, an extremely efficient coating system is provided. The top of the plenum includes an exhaust system with an orifice plate with a plurality of orifices spaced across the width of the deposition plenum. These orifices restrict gas exhaust to provide the gas and vapor residence time for the materials being used.

Continuous feed coater

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Alpharetta, GA, United States of America

Tzyy-Jiuan Jan Hwang